Flexible pouch with folded spout

Details Flexible pouch with folded spout Flexible pouch with folded spout

1990-02-12

1990-12-18

Marcus, Stephen

Flexible bags

With means to maintain the bag mouth in an open configuration

383104, 383906, 222572, 222575, B65D 3338

Patent

active

049782320

ABSTRACT:
A flexible pouch formed from a single sheet of plastic material folded over upon itself along an umbrella like fold assembly to provide the opposed walls of a chamber for storing a product and an optional second sheet to form the bottom of the chamber. The walls and the bottom are sealed along their periphery to form the chamber. The pouch has a self-opening spout formed in part by the fold assembly which expands and springs open when the sealed end of the spout is cut off. The fold assembly not only provides a large spout opening, but also provides a spring force which keeps the spout open so that all the product may be emptied from the chamber.

REFERENCES:
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patent: 3171581 (1965-03-01), Kugler
patent: 3380646 (1968-04-01), Doyen et al.
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patent: 3935993 (1976-02-01), Doyen et al.
patent: 4285376 (1981-08-01), Ausnit
patent: 4332344 (1982-06-01), Strodthoff
patent: 4454979 (1984-06-01), Ikeda et al.
patent: 4491245 (1985-06-01), Jamison
patent: 4578813 (1986-03-01), Ausnit

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